CVE-2021-25094
CVSS v3
8.1
HIGH
EPSS Score
90.2 %
exploit probability
CISA KEV
No
known exploited
Exploitation
—
SSVC status
Description
The Tatsu WordPress plugin before 3.3.12 add_custom_font action can be used without prior authentication to upload a rogue zip file which is uncompressed under the WordPress's upload directory. By adding a PHP shell with a filename starting with a dot ".", this can bypass extension control implemented in the plugin. Moreover, there is a race condition in the zip extraction process which makes the shell file live long enough on the filesystem to be callable by an attacker.
Technical details
- Published
- 2022-04-25
- Exploit-DB
- EDB-52260
Frequently asked questions
What is CVE-2021-25094?
The Tatsu WordPress plugin before 3.3.12 add_custom_font action can be used without prior authentication to upload a rogue zip file which is uncompressed under the WordPress's upload directory. By adding a PHP shell with a filename starting with a dot ".", this can bypass extension control implemented in the plugin. Moreover, there is a race condition in the zip extraction process which makes the shell file live long enough on the filesystem to be callable by an attacker.
Is CVE-2021-25094 actively exploited?
Active exploitation of CVE-2021-25094 has not been confirmed. The EPSS score is 90.2%, indicating the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2021-25094?
CVE-2021-25094 has a CVSS v3 base score of 8.1 (HIGH severity).
Is CVE-2021-25094 affecting your environment?
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